Yamaha WaveRunner GP1300R 2003 Manuel D'atelier page 230

POWR
REED VALVES
SERVICE POINTS
Reed valve inspection
1. Check:
• Reed valves
Cracks/damage → Replace.
2. Measure:
• Valve warpage a
Out of specification → Replace.
Valve warpage limit:
0.200 mm (0.0079 in)
3. Measure:
• Valve stopper height b
Out of specification → Replace.
Valve stopper height:
10.5–10.9 mm (0.413–0.429 in)
5-20
E